I highly recommend the LLVM Kaleidoscope tutorial. [1] It takes you through all the steps required to implement a REPL for a simple single-type language, and is

I highly recommend the LLVM Kaleidoscope tutorial. [1] It takes you through all the steps required to implement a REPL for a simple single-type language, and is surprisingly concise given the end result. Regarding the JIT aspect, if you are like me, you will be in awe when you encounter the single operation f_ptr = engine->getPointerToFunction(f_def) It turns a function definition (in LLVM IR) into an actual function pointer that you can invoke just like any other C/C++ function. [1] http://llvm.org/docs/tutorial/LangImpl1.html#tutorial-introduction http://llvm.org/docs/tutorial/LangImpl1.html#tutorial-introd...